Lisa Marie Presley‘s 8-year-old twin daughters are in the custody of child protective services in California after disturbing photos of children were allegedly found on a computer belonging to Presley’s estranged husband and the twins’ father — musician Michael Lockwood — according to explosive new court documents filed by Presley’s legal team.

The daughter of Elvis Presley said she was “shocked and horrified and sick to my stomach” at the alleged discovery, which is detailed in papers filed in California Superior Court earlier this month as part of the couple’s ongoing divorce.

According to the filing, “Respondent was discovered to have hundreds of inappropriate photos of children and is facing allegation of sexual abuse and neglect.